Notification controller and notification control method

1. A notification controller comprising: a processor to execute a program; and a memory to store the program which, when executed by the processor, performs processes of, if at least one passenger of two or more passengers in a target vehicle gets out of the vehicle to become an off-board passenger, judging whether there is a different passenger staying in the target vehicle; judging whether a hazardous situation is occurring around the target vehicle if there is an on-board passenger who is the different passenger staying in the target vehicle; and in response to a judging that the hazardous situation is occurring, determining whether to make a radio communication with a communication terminal of the off board passenger based on judgement related to the different passenger, the judgement being based on at least one of an operational input received from the different passenger, and a level of recognition of the hazardous situation by the on-board passenger on the basis of at least any of a consciousness level and a direction of a line of sight of the on-board passenger, and a behavior by the on-board passenger; and making the radio communication with the communication terminal of the off-board passenger to make outward notification that is notification indicating the occurrence of the hazardous situation to the off-board passenger based on the determining whether to make the radio communication.

2. The notification controller according to claim 1, wherein if it is judged that the hazardous situation is occurring, a hazardous level indicating a level of the hazardous situation is judged, and it is judged whether to make the outward notification and a substance of the outward notification is determined in response to the hazardous level.

3. The notification controller according to claim 1, wherein the hazardous level is judged on the basis of a distance between a factor of the hazardous situation and the target vehicle.

4. The notification controller according to claim 1, wherein if a factor of the hazardous situation is a human existing around the target vehicle, the hazardous level is judged on the basis of at least any of a behavior by the human, a line of sight of the human, and a belonging to the human.

5. The notification controller according to claim 1, wherein if a factor of the hazardous situation is a non-target vehicle existing around the target vehicle, the hazardous level is judged on the basis of at least one of a line of sight of a human in the non-target vehicle and a radio wave signal received from the non-target vehicle.

6. The notification controller according to claim 1, wherein if a factor of the hazardous situation is an animal existing around the target vehicle, the hazardous level is judged on the basis of the type of the animal.

7. The notification controller according to claim 1, wherein the outward notification is made again if feedback information indicating that the outward notification made previously has been checked is not received from the communication terminal of the off-board passenger.

8. The notification controller according to claim 7, wherein a substance of the outward notification includes a frequency of the outward notification.

9. The notification controller according to claim 1, wherein judged is the level of recognition of the hazardous situation by the on-board passenger on the basis of at least any of the consciousness level and the direction of a line of sight of the on-board passenger, and the behavior by the on-board passenger, and it is judged whether to make the outward notification and a substance of the outward notification is determined in response to the recognition level.

10. The notification controller according to claim 9, wherein if it is judged that the hazardous situation is occurring, an inward notification is made that is a notification indicating the occurrence of the hazardous situation to the on-board passenger on the basis of the recognition level using an output device mounted on the target vehicle.

11. The notification controller according to claim 10, wherein the inward notification is made through voice spoken by the off-board passenger.

12. The notification controller according to claim 2, wherein if it is judged that the hazardous situation is occurring, a surrounding warning is issued that is a warning to the surrounding of the target vehicle using a warning device mounted on the target vehicle.

13. The notification controller according to claim 12, wherein the surrounding warning is issued in response to operational input to the communication terminal of the off-board passenger as a trigger.

14. The notification controller according to claim 12, wherein a substance of the surrounding warning is changed in response to the hazardous level.

15. The notification controller according to claim 12, wherein the surrounding warning is issued by outputting any of an image, voice, and spotlight toward a direction of a factor of the hazardous situation.

16. The notification controller according to claim 1, wherein a third party notification is made that is a notification indicating the occurrence of the hazardous situation to a predetermined third party other than the off-board passenger and the on-board passenger by radio communication with a communication device of the third party.

17. The notification controller according to claim 1, wherein even if it is judged that the hazardous situation is occurring, the outward notification is not made if the operational input indicating that the outward notification is not to be made is received from the on-board passenger.

18. The notification controller according to claim 1, wherein the target vehicle is configured to drive autonomously using a autonomous driving device, the autonomous driving device is made to move the target vehicle if it is judged that the hazardous situation is occurring.

19. A notification control method comprising: if at least one passenger of two or more passengers in a target vehicle gets out of the vehicle to become an off-board passenger, judging whether there is a different passenger staying in the target vehicle; judging whether a hazardous situation is occurring around the target vehicle if there is an on-board passenger who is the different passenger staying in the target vehicle; in response to judging that the hazardous situation is occurring, determining whether to make a radio communication with a communication terminal of the off board passenger based on judgement related to the different passenger, the judgement being based on at least one of an operational input received from the different passenger, and a level of recognition of the hazardous situation by the on-board passenger on the basis of at least any of a consciousness level and a direction of a line of sight of the on-board passenger, and a behavior by the on-board passenger; and making the radio communication with the communication terminal of the off-board passenger to make outward notification that is notification indicating the occurrence of the hazardous situation to the off-board passenger based on the determining whether to make the radio communication.